1. Computer-Supported Social Networks Caroline Haythornthwaite Graduate School of Library and Information Science University of Illinois at Urbana Champaign Caroline Haythornthwaite Graduate School of Library and Information Science University of Illinois at Urbana Champaign

2. Computer-Supported Social Networks  Online social networks  Who talks to whom, about what, and via which media?  Are online ties as real as offline ties?  Same relations, strength, meaning  What constitutes community online?  How do media and mandates about their use affect patterns of interaction among distributed participants?  What facilitates or constrains building ties online?  Online social networks  Who talks to whom, about what, and via which media?  Are online ties as real as offline ties?  Same relations, strength, meaning  What constitutes community online?  How do media and mandates about their use affect patterns of interaction among distributed participants?  What facilitates or constrains building ties online?  Media multiplexity  Strong ties make use of more media than weak ties  Unidimensional scale  Media appear in a pair’s repertoire in a similar order  ‘Base’ medium is group- wide; add-ons are private  Latent ties  Ties technically possible but not activated -- established by authorities beyond communicating pairs

3. Distributed Knowledge Networks  Network patterns among members of distributed, collaborative research teams  Distributions in distance, knowledge base, discipline  What relations comprise collaborative knowledge work? What do members learn from each other?  Learn about field, process, method, technology; do joint research; create ideas; socialize; gain access to networks; work on administration  Who belongs to the team? Discovery of core team co- workers  How can computer media, collaborative tools, etc., support interactions?  Network patterns among members of distributed, collaborative research teams  Distributions in distance, knowledge base, discipline  What relations comprise collaborative knowledge work? What do members learn from each other?  Learn about field, process, method, technology; do joint research; create ideas; socialize; gain access to networks; work on administration  Who belongs to the team? Discovery of core team co- workers  How can computer media, collaborative tools, etc., support interactions?

4. Other Interests  Network changes over time  Visualizing online conversation  Determining rules and scope of visualization  Local and global network impact of ICTs and the Internet  Network aspects of distributed research, teaching and learning  Network changes over time  Visualizing online conversation  Determining rules and scope of visualization  Local and global network impact of ICTs and the Internet  Network aspects of distributed research, teaching and learning Email network over 3 months Visualizing a chat session

5. Papers  Haythornthwaite, C. & Wellman, B. (1998). Work, friendship and media use for information exchange in a networked organization. Journal of the American Society for Information Science, 49(12), 1101-1114.  Haythornthwaite, C. (2000). Online personal networks: Size, composition and media use among distance learners. New Media and Society, 2(2), 195-226.  Haythornthwaite, C. (2002). Strong, weak and latent ties and the impact of new media. The Information Society, 18(5), 385 - 401.  Haythornthwaite, C. (2005). Social networks and Internet connectivity effects. Information, Communication & Society, 8(2), 125-147.  Haythornthwaite, C. (forthcoming). Learning and knowledge exchanges in interdisciplinary teams. Journal of the American Society for Information Science and Technology.  Haythornthwaite, C. (forthcoming). Social networks and online community. To appear in A. Joinson, K. McKenna, U. Reips & T. Postmes (Ed.), Oxford Handbook of Internet Psychology. Oxford University Press.  See also http://people.lis.uiuc.edu/~haythorn/  Haythornthwaite, C. & Wellman, B. (1998). Work, friendship and media use for information exchange in a networked organization. Journal of the American Society for Information Science, 49(12), 1101-1114.  Haythornthwaite, C. (2000). Online personal networks: Size, composition and media use among distance learners. New Media and Society, 2(2), 195-226.  Haythornthwaite, C. (2002). Strong, weak and latent ties and the impact of new media. The Information Society, 18(5), 385 - 401.  Haythornthwaite, C. (2005). Social networks and Internet connectivity effects. Information, Communication & Society, 8(2), 125-147.  Haythornthwaite, C. (forthcoming). Learning and knowledge exchanges in interdisciplinary teams. Journal of the American Society for Information Science and Technology.  Haythornthwaite, C. (forthcoming). Social networks and online community. To appear in A. Joinson, K. McKenna, U. Reips & T. Postmes (Ed.), Oxford Handbook of Internet Psychology. Oxford University Press.  See also http://people.lis.uiuc.edu/~haythorn/